Heat transfer study in a rotor–stator system air-gap with an axial inflow

Pellé, Julien; Harmand, Souad

doi:10.1016/j.applthermaleng.2008.07.014

Cited by 46 publications

(25 citation statements)

References 20 publications

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“…It decreases first as G increases up to the transition to the Batchelor regime. Pellé and Harmand [PEL09] extended their experimental database using the same apparatus (0.01≤G≤0.16) and measurement technique covering a wide range of jet and rotational Reynolds numbers:…”

Section: Heat Transfermentioning

confidence: 99%

Review of fluid flow and convective heat transfer within rotating disk cavities with impinging jet

Harmand

Pellé

Poncet

et al. 2013

International Journal of Thermal Sciences

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Section: Heat Transfermentioning

confidence: 99%

Review of fluid flow and convective heat transfer within rotating disk cavities with impinging jet

Harmand

Pellé

Poncet

et al. 2013

International Journal of Thermal Sciences

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“…The experimental set-up in this study was the same than previously detailed in [3,22] and shown in Figure 1. The rotor has a R ext = 310 mm radius and its rotational velocity could be changed with a frequency variator.…”

Section: Methodsmentioning

confidence: 99%

“…For greater values of Re, the jet does not affect the local heat transfer distribution. More recently, Pellé and Harmand [22] measured the local convective heat transfer coefficient along the rotor by infrared thermography. They considered an impinging jet in an unshrouded rotor-stator cavity for Re j = 4.16×10 4 , Re = [2×10 4 −5.16×10 5 ] and G = [0.01 − 0.16].…”

Section: Introductionmentioning

confidence: 99%

Turbulent impinging jet flow into an unshrouded rotor–stator system: Hydrodynamics and heat transfer

Poncet

Nguyen

Harmand

et al. 2013

International Journal of Heat and Fluid Flow

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New calculations using an innovative Reynolds Stress Model are compared to velocity measurements performed by Particle Image Velocimetry technique and the predictions of a k − ω SST model in the case of an impinging jet flow onto a rotating disk in a discoidal and unshrouded rotor-stator system. The cavity is characterized by a dimensionless spacing interval G = 0.02 and a low aspect ratio for the jet e/D = 0.25. Jet Reynolds numbers ranging from 1.72 × 10 4 to 4.3 × 10 4 and rotational Reynolds numbers between 0.33×10 5 and 5.32×10 5 are considered. Three flow regions have been identified: a jet-dominated flow area at low radii characterized by a zero tangential velocity, a mixed region at intermediate radii and rotationdominated flow region outwards. For all parameters, turbulence, which tends to the isotropic limit in the core, is much intense in a region located after the impingement zone. A relative good agreement between the PIV measurements and the predictions of the RSM has been obtained in terms of the radial distributions of the core-swirl ratio and of the turbulence intensities. The k − ω SST model overstimates these flow characteristics in the jet dominated area. For the thermal field, the heat transfers are enhanced in the jet dominated region and decreases towards the periphery of the cavity. The jet Reynolds number appears to have a preponderant effect compared to the rotational one on the heat transfer distribution. The two RANS modelings compare quite well with the heat transfer measurements for these ranges of parameters.

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“…Regarding the studies performed on heat transfer on rotorstator systems, the research varies greatly, as very different setups were examined from free discs [15,16], enclosed rotor-stator systems [17,18], (partially) open cavities [16,19,20] without superposed throughput [19][20][21] and with throughput [16,22,23]. Moreover, only little research has focused on closed rotor-stator cavities with superimposed throughput, yet [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Rotor‐Stator Spinning Disc Reactor: Characterization of the Single‐Phase Stator‐Side Heat Transfer

2017

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Dedicated to Professor Rüdiger Lange on the occasion of his 65th birthdayThe single-phase fluid-stator heat transfer in a rotor-stator spinning disc reactor in dependence on rotational Reynolds number, dimensionless throughput, Prandtl number, and aspect ratio is examined. For the selected ranges of these parameters, an increase in the stator-side Nusselt number with increasing Reynolds number, Prandtl number, and a higher throughput is found. Laminar and turbulent flow regions are observed, which coincide with a throughput-and a rotation-governed heat transfer regime, respectively. A Nusselt correlation to predict the experimental data in the turbulent flow regime within 20 % accuracy was established. A distinct increase in the overall volumetric heat transfer coefficient for a rise in Reynolds number was observed, being considerably higher compared to conventional tube reactors and twice as large in contrast with a similar rotor-stator setup.

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Heat transfer study in a rotor–stator system air-gap with an axial inflow

Cited by 46 publications

References 20 publications

Review of fluid flow and convective heat transfer within rotating disk cavities with impinging jet

Review of fluid flow and convective heat transfer within rotating disk cavities with impinging jet

Turbulent impinging jet flow into an unshrouded rotor–stator system: Hydrodynamics and heat transfer

Rotor‐Stator Spinning Disc Reactor: Characterization of the Single‐Phase Stator‐Side Heat Transfer

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